首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   123327篇
  免费   8382篇
  国内免费   535篇
耳鼻咽喉   1315篇
儿科学   3685篇
妇产科学   2064篇
基础医学   16499篇
口腔科学   2201篇
临床医学   12201篇
内科学   26146篇
皮肤病学   1482篇
神经病学   11974篇
特种医学   3835篇
外国民族医学   1篇
外科学   17720篇
综合类   1695篇
现状与发展   1篇
一般理论   156篇
预防医学   10739篇
眼科学   3308篇
药学   8746篇
  1篇
中国医学   278篇
肿瘤学   8197篇
  2023年   564篇
  2022年   886篇
  2021年   2380篇
  2020年   1415篇
  2019年   2409篇
  2018年   2811篇
  2017年   2049篇
  2016年   2386篇
  2015年   2750篇
  2014年   3972篇
  2013年   5571篇
  2012年   8496篇
  2011年   9124篇
  2010年   4983篇
  2009年   4644篇
  2008年   8045篇
  2007年   8546篇
  2006年   8087篇
  2005年   8143篇
  2004年   7678篇
  2003年   7098篇
  2002年   6829篇
  2001年   1204篇
  2000年   912篇
  1999年   1240篇
  1998年   1461篇
  1997年   1231篇
  1996年   952篇
  1995年   946篇
  1994年   805篇
  1993年   795篇
  1992年   684篇
  1991年   625篇
  1990年   550篇
  1989年   508篇
  1988年   512篇
  1987年   494篇
  1986年   428篇
  1985年   511篇
  1984年   570篇
  1983年   529篇
  1982年   703篇
  1981年   615篇
  1980年   542篇
  1979年   380篇
  1978年   353篇
  1977年   357篇
  1976年   296篇
  1975年   280篇
  1974年   288篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
1.
2.
3.
We report a case of benign lymphoplasmacytic plaque (LPP) in a child. These asymptomatic erythematous papulonodular lesions are an emerging clinicopathological entity. Herein, we describe a previously unreported site for LPP lesions, namely, the volar wrist and the distal ipsilateral palm.  相似文献   
4.

Objectives

To determine: (i) the behaviour change techniques used by a sample of Australian physiotherapists to promote non-treatment physical activity; and (ii) whether those behaviour change techniques are different to the techniques used to encourage adherence to rehabilitation exercises.

Design

Cross-sectional survey.

Method

An online self-report survey was advertised to private practice and outpatient physiotherapists treating patients with musculoskeletal conditions. The use of 50 behaviour change techniques were measured using five-point Likert-type scale questions.

Results

Four-hundred and eighty-six physiotherapists responded to the survey, with 216 surveys fully completed. Most respondents (85.1%) promoted non-treatment physical activity often or all of the time. Respondents frequently used 29 behaviour change techniques to promote non-treatment physical activity or encourage adherence to rehabilitation exercises. A similar number of behaviour change techniques was frequently used to encourage adherence to rehabilitation exercises (n = 28) and promote non-treatment physical activity (n = 26). Half of the behaviour change techniques included in the survey were frequently used for both promoting non-treatment physical activity and encouraging adherence to rehabilitation exercises (n = 25). Graded tasks was the most, and punishment was the least, frequently reported technique used to promote non-treatment physical activity and encourage adherence to rehabilitation exercises.

Conclusions

Respondents reported using similar behaviour change techniques to promote non-treatment physical activity and encourage adherence to rehabilitation exercises. The variability in behaviour change technique use suggests the behaviour the physiotherapist is promoting influences their behaviour change technique choice. Including the frequently-used behaviour change techniques in non-treatment physical activity promotion interventions might improve their efficacy.  相似文献   
5.
6.
7.
8.
9.
10.

Objective

Arch obstruction after the Norwood procedure is common and contributes to mortality. We determined the prevalence, associated factors, and practice variability of arch reintervention and assessed whether arch reintervention is associated with mortality.

Methods

From 2005 to 2017, 593 neonates in the Congenital Heart Surgeons' Society Critical Left Heart Obstruction cohort underwent a Norwood procedure. Median follow-up was 3.7 years. Multivariable parametric models, including a modulated renewal analysis, were performed.

Results

Of the 593 neonates, 146 (25%) underwent 218 reinterventions for arch obstruction after the Norwood procedure: catheter-based (n = 168) or surgical (n = 50) at a median age of 4.3 months (quartile 1-quartile 3, 2.6-5.7). Interdigitation of the distal aortic anastomosis was protective against arch reintervention. Development of ≥ moderate tricuspid valve regurgitation and right ventricular dysfunction at any point was associated with arch reintervention. Nonsignificant variables for arch reintervention included shunt type and preoperative aortic measurements. Surgical arch reintervention was protective against arch reintervention, but transcatheter reintervention was associated with increased reintervention. Arch reintervention was not associated with increased mortality. There was wide institutional variation in incidence of arch reintervention (range, 0-40 reinterventions per 100 years patient follow-up) and in preintervention gradient (range, 0-64 mm Hg).

Conclusions

Interdigitation of the distal aortic anastomosis during the Norwood procedure decreased the risk of arch reintervention. Surgical arch reintervention is more definitive than transcatheter. Arch reintervention after the Norwood procedure is not associated with increased mortality. Serial surveillance for arch obstruction, integrated with changes in right ventricular function and tricuspid valve regurgitation, is recommended after the Norwood procedure to improve outcomes.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号